CA2660786A1 - Systeme et procede pour communiquer des donnees en utilisant un multiplexage par repartition orthogonale de la frequence (ofdm) aleatoire a base de symboles - Google Patents

Systeme et procede pour communiquer des donnees en utilisant un multiplexage par repartition orthogonale de la frequence (ofdm) aleatoire a base de symboles Download PDF

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Publication number
CA2660786A1
CA2660786A1 CA002660786A CA2660786A CA2660786A1 CA 2660786 A1 CA2660786 A1 CA 2660786A1 CA 002660786 A CA002660786 A CA 002660786A CA 2660786 A CA2660786 A CA 2660786A CA 2660786 A1 CA2660786 A1 CA 2660786A1
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CA
Canada
Prior art keywords
pseudo
encryption algorithm
ofdm
modulation
symbol rate
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002660786A
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English (en)
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CA2660786C (fr
Inventor
Christopher D. Moffatt
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Harris Corp
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Individual
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Publication of CA2660786A1 publication Critical patent/CA2660786A1/fr
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Publication of CA2660786C publication Critical patent/CA2660786C/fr
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2614—Peak power aspects
    • H04L27/2618—Reduction thereof using auxiliary subcarriers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2626—Arrangements specific to the transmitter only
    • H04L27/2627—Modulators
    • H04L27/2628—Inverse Fourier transform modulators, e.g. inverse fast Fourier transform [IFFT] or inverse discrete Fourier transform [IDFT] modulators
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2626—Arrangements specific to the transmitter only
    • H04L27/2627—Modulators
    • H04L27/2634—Inverse fast Fourier transform [IFFT] or inverse discrete Fourier transform [IDFT] modulators in combination with other circuits for modulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/06—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols the encryption apparatus using shift registers or memories for block-wise or stream coding, e.g. DES systems or RC4; Hash functions; Pseudorandom sequence generators
    • H04L9/065—Encryption by serially and continuously modifying data stream elements, e.g. stream cipher systems, RC4, SEAL or A5/3
    • H04L9/0656—Pseudorandom key sequence combined element-for-element with data sequence, e.g. one-time-pad [OTP] or Vernam's cipher

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Discrete Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Quality & Reliability (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Transmitters (AREA)
  • Mobile Radio Communication Systems (AREA)
CA2660786A 2006-08-16 2007-08-16 Systeme et procede pour communiquer des donnees en utilisant un multiplexage par repartition orthogonale de la frequence (ofdm) aleatoire a base de symboles Expired - Fee Related CA2660786C (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US11/464,877 2006-08-16
US11/464,877 US7751488B2 (en) 2006-08-16 2006-08-16 System and method for communicating data using symbol-based randomized orthogonal frequency division multiplexing (OFDM)
PCT/US2007/076062 WO2008022234A1 (fr) 2006-08-16 2007-08-16 Système et procédé pour communiquer des données en utilisant un multiplexage par répartition orthogonale de la fréquence (ofdm) aléatoire à base de symboles

Publications (2)

Publication Number Publication Date
CA2660786A1 true CA2660786A1 (fr) 2008-02-21
CA2660786C CA2660786C (fr) 2012-06-05

Family

ID=38698403

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2660786A Expired - Fee Related CA2660786C (fr) 2006-08-16 2007-08-16 Systeme et procede pour communiquer des donnees en utilisant un multiplexage par repartition orthogonale de la frequence (ofdm) aleatoire a base de symboles

Country Status (8)

Country Link
US (1) US7751488B2 (fr)
EP (1) EP2062410B1 (fr)
JP (1) JP5025728B2 (fr)
KR (1) KR101057568B1 (fr)
CN (1) CN101518008B (fr)
CA (1) CA2660786C (fr)
TW (1) TWI384815B (fr)
WO (1) WO2008022234A1 (fr)

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Also Published As

Publication number Publication date
WO2008022234B1 (fr) 2008-04-03
WO2008022234A1 (fr) 2008-02-21
TW200830808A (en) 2008-07-16
EP2062410A1 (fr) 2009-05-27
EP2062410B1 (fr) 2015-01-21
US20080043861A1 (en) 2008-02-21
CN101518008B (zh) 2012-02-08
US7751488B2 (en) 2010-07-06
TWI384815B (zh) 2013-02-01
CN101518008A (zh) 2009-08-26
KR101057568B1 (ko) 2011-08-17
CA2660786C (fr) 2012-06-05
JP2010501142A (ja) 2010-01-14
JP5025728B2 (ja) 2012-09-12
KR20090042964A (ko) 2009-05-04

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